Google Enhanced 404 Feature Gone?

In August 2008, Google released what was called the enhanced 404 widget that allowed webmasters to easily create custom 404 pages. In fact, we still have a sample of this in action at advertize.html.

But for some reason, I think Google removed the feature from the Google Webmaster Tools section. As a Google Webmaster Help thread discusses, he can't find it in the Webmaster Tools section. I looked for several minutes and I also cannot find it anywhere.

Did Google move it and I can't find it? Did they drop the feature with the launch of the new design?